Answer:
a) libertarianism, liberalism and capitalism
Step-by-step explanation:
The U.S. is known for the ideas of freedom, hence libertarianism and liberalism is correct. The U.S. practices free capitalistic market economy as well, hence A is correct.
B is incorrect because the current American ideology is more liberal than conservative
C is incorrect because conservatism is in there, as well as fascism which is when a dictator rules the government and its people. U.S. is a constitutional federal republic with a presidential system that is decided by the people.
D is incorrect because the socialism and authoritarianism involve lack of personal individual freedom for an authority figure.